Apologia General Science Module Six Experiment 6.4
Experiment 6.4: Chemical Weathering "A"
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| Vinegar, limestone, a bowl, steel wool and time |
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| Put a limestone rock in a jar, add vinegar to cover over the rock. Our kit wanted us to use a bowl, but I liked this jar better. You can immediately see the bubbles raising up from the rock. |
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| The Point: Can you see the flow of bubbles rising up? The bubbles are the LIME leaving the rock! This is a chemical weathering example, b/c the vinegar is changing the composition of the rock. In the end this rock will not be a limestone anymore! |
Two days later....
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| Chemical Weathering "B" |
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| A bowl, vinegar, and a little steel wool The vinegar is a mild acid, and will eat away the steel and turn it ti rust. This process is a Chemical Weathering. |
UPDATE: Two days later:
The steel wool is still not rusting after two days.
